CN102862475B - A kind of electric automobile gear device and method for changing speed thereof - Google Patents
A kind of electric automobile gear device and method for changing speed thereof Download PDFInfo
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- CN102862475B CN102862475B CN201210384849.4A CN201210384849A CN102862475B CN 102862475 B CN102862475 B CN 102862475B CN 201210384849 A CN201210384849 A CN 201210384849A CN 102862475 B CN102862475 B CN 102862475B
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- converter
- fluid torque
- torque
- electric automobile
- oil pump
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000012530 fluid Substances 0.000 claims abstract description 76
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 230000009194 climbing Effects 0.000 claims abstract description 15
- 230000001133 acceleration Effects 0.000 claims abstract description 9
- 238000005452 bending Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 22
- 230000008859 change Effects 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/06—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/0021—Transmissions for multiple ratios specially adapted for electric vehicles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Gearings (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention discloses a kind of electric automobile gear device and method for changing speed thereof, including the fluid torque-converter of locking function, oil pump, Oil pump electrical machinery, controller, reducing gear, differential mechanism.Described fluid torque-converter includes the parts such as pump impeller, turbine, power shaft, output shaft, drives motor by power shaft is connected with pump impeller, turbine is connected with output shaft.In most cases, fluid torque-converter is in lockup state to described electric automobile gear device, and the torque of motor is integral drive through fluid torque-converter, and transmission efficiency is high；When electric automobile is in low speed climbing or anxious acceleration starting, control fluid torque-converter is in released state, and fluid torque-converter has hydraulic moment changeable function, and driving torque gets a promotion, while improving grade climbing performance and acceleration, it is to avoid motor is operated in locked rotor condition.Electric automobile gear device simple in construction of the present invention, easy to control, grade climbing performance and the acceleration of electric automobile can be improved, strengthen automobile reliability.
Description
Technical field
The present invention relates to a kind of automotive transmission and method for changing speed, particularly relate to a kind of applicable pure electronic
The variator of automobile use and method for changing speed thereof.
Background technology
Develop the energy-conservation inevitable choice having become as China's energy strategy with new-energy automobile, current emphasis
It is to advance pure electric automobile and plug-in hybrid-power automobile industrialization, popularizes non-plug-in
Hybrid vehicle, energy-saving IC engine automobile, promote China's automobile industry overall technology level.
The speed change of electric automobile mainly has following several scheme at present.Scheme one is to use fixing speed reducing ratio
；Scheme two is to use a two speed transmission；Scheme three is to use the variator of conventional fuel oil car
Carry out speed change.Owing to motor itself has between high efficient area relatively wide, conventional fuel oil car
Variator typically has four to seven gears, and the speed change using it for pure electric automobile seems that big material is little
With.If using fixing speed reducing ratio, drive system structure is simply, but can embody and add
Speed performance and the poor defect of grade climbing performance.Therefore the scheme of two speed transmission is proposed,
Use big retarding ratio when running at a low speed, it is achieved preferably starting performance, when running at high speed, use little deceleration
Ratio, meets the requirement of the max speed.
Such as, patent documentation CN101780768A discloses a kind of two speed change automatically for electric vehicle
Speed device.
This electric automobile gear device include power shaft, jackshaft, output shaft, clutch, brake,
Planetary gears and differential mechanism.The sun gear of this variator planetary gears divides with planet carrier
Not Lian Jie power shaft and jackshaft, clutch and brake all with the ring gear of planetary gears
Removably connecting, jackshaft is connected with output shaft, and output shaft is connected with differential mechanism, and power passes through
Differential mechanism is delivered to wheel, drives vehicle to travel.This variator passes through a planetary gears
Conversion gear, designs ingenious, simple for structure.This variator reduces electronic to a certain extent
The vehicle requirement to motor, adds and drives motor in the time of high efficiency section operation, improve
Continual mileage.
The deficiency of this electric automobile gear device mainly has following 2 points: the first, during gearshift, rotor turns
Speed change is big, and the rotary inertia of rotor changes the most greatly, causes the friction of brakes and clutches
The abrasion of sheet is the biggest；The second, during starting, motor is operated in locked rotor condition, easily causes motor
It is burned.
Market in urgent need one simple in construction, it is possible to solve the electric automobile dedicated transmission of above-mentioned deficiency.
Summary of the invention
Present invention aim to overcome the deficiencies in the prior art, it is provided that one simply, reliably electricity
Electrical automobile variator and method for changing speed thereof.
For solving above technical problem, the technical solution adopted in the present invention is: a kind of electric automobile becomes
Speed device, including reducing gear, differential mechanism, its construction features is, also includes that one has locking
The fluid torque-converter of function, described fluid torque-converter one end
Being connected with the driving motor of electric automobile, the other end is connected with the input gear of described reducing gear
Connecing, described reducing gear is connected with differential mechanism by output shaft, thus exports power to wheel.
Described fluid torque-converter includes fluid torque-converter power shaft, Output Shaft of Hydraulic Torque Converter, and fluid power becomes
Square device turbine and face of fluid torque converter；Wherein, described fluid torque-converter power shaft one end with
Driving motor is connected, and the other end is connected with described face of fluid torque converter；Described fluid power becomes
Square device output shaft one end is connected with described transformer turbine, and the other end is defeated with reducing gear
Enter gear to be connected.
Described fluid torque-converter uses oil pump to provide unlocking pressure, and described oil pump is driven by Oil pump electrical machinery,
The solution lock control to fluid torque-converter can be realized by a controller control oil pump motor.
Described reducing gear can use gear train can also use planetary gears.
A kind of method utilizing above-mentioned electric automobile gear device to realize electric automobile gear, including following step
Rapid:
1. the output torque driving motor passes to pass described hydraulic moment changeable from described fluid torque-converter power shaft
Device pump impeller；
According to the signal data collected, the most described controller judges whether that controlling described Oil pump electrical machinery drives
Described oil pump unlocks or fluid torque-converter described in locking；
3. when vehicle is in the big driving torque of needs such as low speed climbing or anxious acceleration starting, by controlling
Device controls described Oil pump electrical machinery and drives oil pump, provides unlocking pressure to fluid torque-converter, makes fluid power
Torque-converters is operated in released state, and power train is operated in bending moment shelves, acts on fluid torque-converter pump
Torque on wheel is delivered to transformer turbine after hydraulic moment changeable, then from hydraulic moment changeable
Device output shaft is delivered to reducing gear；
4., when vehicle traveling need not big driving torque, described controller controls described Oil pump electrical machinery and stops
Only work, discharges unlocking pressure, makes fluid torque-converter be operated in lockup state, act on fluid power
Torque on converter pump is directly delivered to transformer turbine, then from fluid torque-converter
Output shaft is delivered to reducing gear.
Hereinafter the technical solution adopted in the present invention is further discussed below: described electric automobile gear device
, including the fluid torque-converter of locking function, oil pump, Oil pump electrical machinery, controller, reductor
Structure, differential mechanism.
The pump impeller of described fluid torque-converter is connected with the output shaft of driving motor of electric vehicle, fluid torque-converter
Turbine be connected with reducing gear, reducing gear is connected with differential mechanism.The driving torque warp of motor
It is delivered to reducing gear after crossing fluid torque-converter, then travels through differential mechanism rear drive vehicle.Institute
Stating fluid torque-converter is the fluid torque-converter with latch functions, during hydraulic torque converter lockout, pump
Wheel and turbine link together and realize integral drive, drive motor torque through fluid torque-converter,
Being transferred to reducing gear, transmission efficiency is high, and most pure motor driving is with this mode transmission.
Hydraulic torque converter lockout is controlled, to realize during slow acceleration and the when that major part travels
High efficiency pure motor driving.Meanwhile, fluid torque-converter can be according to the needs in driving process
It is unlocked operation.After fluid torque-converter unlocks, the motor driving torque of input there is a liter torsion
Function, improves torque, thus promotes climbing capacity and improve starting performance, also can keep away simultaneously
Exempt from motor and be operated in locked rotor condition, decrease the heating of motor, it is to avoid motor is burned, and carries
The high electric powered motor reliability with drive system.
Relative to the electric automobile without gear, use this programme variator to merely add one and have
The fluid torque-converter of latch functions, but can solve starting and the problem of climbing well.Relatively
In its simple in construction of two-level variator, compact, operational reliability is high.
The present invention preferably make use of the bending moment function of fluid torque-converter, releases lockup state when climbing
After, by fluid torque-converter by torque magnification, improve the grade climbing performance of electric motor car.Add anxious
During speed starting, by fluid torque-converter by torque magnification, improve the instant getaway of electric motor car
Energy.Under frequent state, fluid torque-converter is in lockup state, and whole transmission system efficiency is high
.By the employing of unlocking function, it is to avoid motor is operated in locked rotor condition, and improve car load can
By property.
Accompanying drawing explanation
Fig. 1 is the system structure schematic diagram of the embodiment of the present invention；
Fig. 2 is the workflow schematic diagram of variator of the present invention.
In the accompanying drawings:
1-fluid torque-converter power shaft；2-Output Shaft of Hydraulic Torque Converter；3-transformer turbine；4-
Face of fluid torque converter；5-oil pump；6-controller；7-Oil pump electrical machinery；8-reducing gear；9-
Differential mechanism.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiments of the present invention are further described.
Referring to the drawings shown in 1, a kind of electric automobile gear device described in the invention, including hydraulic moment changeable
Device power shaft 1；Output Shaft of Hydraulic Torque Converter 2；Transformer turbine 3；Face of fluid torque converter
4；Oil pump 5；Controller 6；Oil pump electrical machinery 7；Reducing gear 8；Differential mechanism 9.
Described fluid torque-converter power shaft 1 one end is connected with driving motor, the other end and fluid torque-converter
Pump impeller 4 is connected；Described Output Shaft of Hydraulic Torque Converter 2 one end is connected with transformer turbine 3
, the other end is connected with reducing gear 8 input gear；Reducing gear output shaft is with differential mechanism 9 even
Connect.The output torque of motor is delivered to face of fluid torque converter 4 from fluid torque-converter power shaft 1,
When hydraulic torque converter lockout, the torque acted on face of fluid torque converter 4 is directly delivered to liquid
Power torque converter turbine 3, is then delivered to reducing gear 8 from Output Shaft of Hydraulic Torque Converter 2；Work as fluid power
When torque-converters unlocks, act on the torque on face of fluid torque converter 4 after hydraulic moment changeable transmits
To transformer turbine 3, it is delivered to reducing gear 8 through Output Shaft of Hydraulic Torque Converter 2.Transmission
Torque to reducing gear 8 is delivered to differential mechanism 9 by gear drive, exports after differential mechanism 9
To drive vehicle to travel.
Described fluid torque-converter uses oil pump 5 to carry to the execution of fluid torque-converter unblock/locking control action
For oil pressure, oil pump 5 is driven to provide pressure to oil circuit by Oil pump electrical machinery 7.
Described reducing gear 8 can realize with gear drive as shown in Figure 1, it is also possible to uses planet tooth
Wheel mechanism realizes.
When vehicle is in the big driving torque of needs such as low speed climbing or anxious acceleration starting, pass through controller
6 control oil pump motors 7 rotate, and drive oil pump 5 to work to fluid torque-converter and provide unlocking pressure, make
Fluid torque-converter is operated in bending moment state after unlocking, and improves driving torque, improves car load climbing
Performance and acceleration.
When vehicle traveling need not big driving torque, make fluid torque-converter be operated in lockup state, pass
Dynamic system is operated in direct high, by integral drive, improves transmission efficiency.
Transmission duty flow process as shown in Figure 2, after program starts, gathers accelerator pedal signal, speed
, motor speed, the parameter such as motor temperature, then judge whether to be in and anxious accelerate starting operating mode,
If then controlling fluid torque-converter to unlock, if not then judging whether to be in low speed climbing operating mode,
Unlock if then controlling fluid torque-converter, if not then control fluid torque-converter is at lockup state,
Repeat above-mentioned steps until terminating.
When variator of the present invention uses direct high, electric automobile has higher transmission efficiency, due to car
Actual travel during major part time be operated in direct high, the employing of the present invention can
Improve the transmission efficiency of electric automobile, extending driving range.
When variator of the present invention uses bending moment shelves, both can realize promoting the function of torque, again may be used simultaneously
To avoid motor by stall.While improving grade climbing performance and acceleration, improve electronic
The reliability of automobile, extends service life.
Generally speaking, electric automobile gear device of the present invention is capable of direct high and hydraulic moment changeable shelves two kinds
Transmission mode, simple in construction, easy to control, and can preferably meet electric automobile to adding
Speed performance, grade climbing performance, the requirement of continual mileage, be especially suitable for low-speed pure electric automobile
。
The content that above-described embodiment illustrates should be understood to that these embodiments are only used for being illustrated more clearly that this
Invention, rather than limit the scope of the present invention, after having read the present invention, this area skill
Art personnel all fall within the application claims institute to the amendment of the various equivalent form of values of the present invention
The scope limited.
Claims (3)
1. an electric automobile gear device, including reducing gear (8), differential mechanism (9), it is characterised in that also include that one has
The fluid torque-converter of latch functions, described fluid torque-converter one end is connected with the driving motor of electric automobile, and the other end subtracts with described
The input gear of speed mechanism (8) is connected, and described reducing gear (8) is connected with differential mechanism (9) by output shaft, thus defeated
Go out power to wheel；
Described fluid torque-converter includes fluid torque-converter power shaft (1), Output Shaft of Hydraulic Torque Converter (2), transformer turbine
And face of fluid torque converter (4) (3)；Wherein, described fluid torque-converter power shaft (1) one end is connected with driving motor,
The other end is connected with described face of fluid torque converter (4)；Described Output Shaft of Hydraulic Torque Converter (2) one end becomes with described fluid power
Square device turbine (3) is connected, and the other end is connected with reducing gear (8) input gear；
Described fluid torque-converter uses oil pump (5) to provide unlocking pressure, and described oil pump (5) is driven by Oil pump electrical machinery (7), logical
Cross a controller (6) control oil pump motor (7) and the solution lock control to fluid torque-converter can be realized.
A kind of electric automobile gear device the most according to claim 1, it is characterised in that described reducing gear (8) uses
Planetary gears.
3. utilize in claim 1～2 method that the electric automobile gear device described in any one realizes electric automobile gear,
It is characterized in that, comprise the following steps:
1. the output torque driving motor passes to pass described face of fluid torque converter from described fluid torque-converter power shaft；
According to the signal data collected, the most described controller (6) judges whether that controlling described Oil pump electrical machinery (7) drives described oil
Pump (5) unlocks or fluid torque-converter described in locking；
3., when vehicle is in low speed climbing or anxious acceleration starting needs big driving torque, described oil pump is controlled by controller (6)
Motor (7) drives oil pump (5), provides unlocking pressure to fluid torque-converter, makes fluid torque-converter be operated in released state, transmission
System is operated in bending moment shelves, and the torque acted on face of fluid torque converter (4) is delivered to fluid torque-converter whirlpool after hydraulic moment changeable
Wheel (3), is then delivered to reducing gear (8) from Output Shaft of Hydraulic Torque Converter (2)；
4., when vehicle traveling need not big driving torque, described controller (6) controls described Oil pump electrical machinery (7) and quits work,
Release unlocking pressure, makes fluid torque-converter be operated in lockup state, and the torque acted on face of fluid torque converter (4) directly passes
It is delivered to transformer turbine (3), is then delivered to reducing gear (8) from Output Shaft of Hydraulic Torque Converter (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210384849.4A CN102862475B (en) | 2012-10-11 | 2012-10-11 | A kind of electric automobile gear device and method for changing speed thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210384849.4A CN102862475B (en) | 2012-10-11 | 2012-10-11 | A kind of electric automobile gear device and method for changing speed thereof |
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| CN102862475A CN102862475A (en) | 2013-01-09 |
| CN102862475B true CN102862475B (en) | 2016-08-17 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106864260A (en) * | 2015-12-11 | 2017-06-20 | 北汽福田汽车股份有限公司 | Rear axle drive structure and vehicle |
| CN105711411B (en) * | 2016-01-27 | 2020-12-11 | 嘉兴市昶兴喷织有限公司 | Stepless speed change wheel |
| JP6338003B1 (en) * | 2017-09-27 | 2018-06-06 | トヨタ自動車株式会社 | Electric car |
| CN109578575B (en) * | 2019-01-02 | 2020-07-31 | 盛瑞传动股份有限公司 | Automatic transmission control method |
| CN110469648A (en) * | 2019-07-16 | 2019-11-19 | 贵州凯星液力传动机械有限公司 | A kind of novel tick-over Hydrodynamic transmission and its control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003148590A (en) * | 2001-11-12 | 2003-05-21 | Yutaka Giken Co Ltd | Fluid transmission gear with lock-up clutch |
| GB0603452D0 (en) * | 2006-02-22 | 2006-04-05 | Ford Global Tech Llc | Hybrid motor vehicle driveline |
| JP5252171B2 (en) * | 2007-09-19 | 2013-07-31 | アイシン・エィ・ダブリュ株式会社 | Vehicle control device |
| CN102358158B (en) * | 2011-08-05 | 2013-12-11 | 上海中科深江电动车辆有限公司 | Hybrid drive system of heavy vehicle |
| CN102358159B (en) * | 2011-08-05 | 2013-12-18 | 上海中科深江电动车辆有限公司 | Hybrid drive system with hydraulic torque converter |
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